MX2011005992A - Radially-shaped heat dissipating apparatus, and bulb-shaped led lighting apparatus using same. - Google Patents

Radially-shaped heat dissipating apparatus, and bulb-shaped led lighting apparatus using same.

Info

Publication number
MX2011005992A
MX2011005992A MX2011005992A MX2011005992A MX2011005992A MX 2011005992 A MX2011005992 A MX 2011005992A MX 2011005992 A MX2011005992 A MX 2011005992A MX 2011005992 A MX2011005992 A MX 2011005992A MX 2011005992 A MX2011005992 A MX 2011005992A
Authority
MX
Mexico
Prior art keywords
cylindrical
led
heat dissipation
leds
main
Prior art date
Application number
MX2011005992A
Other languages
Spanish (es)
Inventor
Tae Gi Yoon
Sang Dong Jeong
Jae Yeong Lee
Original Assignee
Amoluxe Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020080123401A priority Critical patent/KR101032415B1/en
Application filed by Amoluxe Co Ltd filed Critical Amoluxe Co Ltd
Priority to PCT/KR2009/006564 priority patent/WO2010064793A2/en
Publication of MX2011005992A publication Critical patent/MX2011005992A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/235Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/02Globes; Bowls; Cover glasses characterised by the shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/04Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/049Patterns or structured surfaces for diffusing light, e.g. frosted surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00Planar light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00Planar light sources
    • F21Y2105/10Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00Light sources with three-dimensionally disposed light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/80Light sources with three-dimensionally disposed light-generating elements on articulated supports or substrates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

The present invention relates to a bulb-shaped LED lighting apparatus which can ensure an effective heat dissipating structure, keep the whole size compact, and expand the beam angles, to thereby widen the use of the lighting apparatus. The LED lighting apparatus of the present invention comprises: an LED package having a metal substrate on which a plurality of LEDs are mounted; a screw cap; a heat dissipating apparatus; and a globe. The heat dissipating apparatus includes a main body and a plurality of heat dissipating fins. The main body includes a cylindrical part having a center with a cylindrical space with an open top, an annular flange vertically projecting from the bottom of the cylindrical part, and a protrusion having a diameter gradually decreasing from the annular flange toward the bottom of the lighting apparatus mounted with the LED package to expand the angle of the beam emitted from the LED package. The heat dissipating fins have inner vertical parts and bottom parts connected to the cylindrical part and the flange of the main body, respectively, and radially protrude in the upward and downward directions to dissipate heat conducted through the main body from the LED package.

Description

HEAT DISSIPATOR OF HEAT OF RADIAL FORM AND LIGHTING APPARATUS LED IN THE FORM OF FOCUS THAT USES THE SAME Technical field The present invention relates to a LED lighting apparatus in the form of focus and, more particularly, to an apparatus for radial heat dissipation, which is configured to efficiently dissipate the heat generated by an LED lighting apparatus and which has a compact size and a backlight characteristic similar to that of the current type "A" incandescent lamp and that can be used for various purposes, and a LED lighting apparatus in the form of focus that incorporates said apparatus for heat dissipation.
Previous Technique In general, in order to use a light emitting diode (LED) as a white light source for lighting, a method is used to generate white light with the three primary colors by integrating red, green and blue LEDs into a single package (in this case, the illuminance of each color light must be uniform, accurately controlling the voltage and current applied to the LED), a method of obtaining pseudo white by making the blue or yellow LED light go to through a yellow or blue fluorescent substance so that a shortwave length is changed to light of several long wavelengths, or a method to produce white, such as a fluorescent lamp, when a nearby ultraviolet passes through a fluorescent substance.
Among them, the main flow is a source of white light in which the blue LED or the ultraviolet LED and the fluorescent substance are combined.
The fluorescent substance is used so as to cover the fluorescent substance in a hemispherical shell of a lighting equipment or to attach a strip of fluorescent substance over the entire surface. The fluorescent substance can be fixed to the surface of the LEDs as many times as required.
The white light source with the previous LEDs has been the focus of attention as a new lighting source, since it has a very excellent emission efficiency, high light intensity, a high speed response characteristic and a long service life. That is, the illuminance of an incandescent lamp of 40 to 60 W can be replaced by 80 LEDs of 5 to 10 W of power. The illuminance of a 100 W incandescent lamp can be implemented using 28 LEDs of approximately 13 W. Consequently, the energy consumed to apply the same lighting environment is much less than that of the current type "A" incandescent lamp. also a fluorescent lamp.
The LED lighting that has the above characteristic, however, is problematic, since it generates a large amount of heat in a process of conversion of electrical energy into light and the heat generated not only degrades the emission characteristic of the LED, but also reduces the useful life of this one.
Therefore, in order to efficiently use LED lighting, the temperature conditions at which the LED can operate normally must be provided. To this end, a conventional apparatus-LED lighting adopts various heat dissipation structures. The heat dissipation structures are manufactured to improve above all a heat dissipation effect and are configured to have a large size. Accordingly, there is a problem in which the size of the LED lighting apparatus is fully increased.
Meanwhile, on an LED chip, the backlight is not performed at the back, because the LED chip typically has a pack structure to make direct light. In addition, if an "A" type LED spotlight is implemented by assembling a series of LED chips on a flat substrate, the lighting apparatus has a vertical curved backlight line (see FIG. 1). In which the light is radiated forward because the light radiates in a straight line.
Accordingly, LED "A" type light fixtures can not have a backlight characteristic appearing in the "A" type incandescent lamp (ie, a curved line of vertical backlight (see figure 2) of a "bat wing" shape in which the light can be adjusted backwards). As a result, the use of LED lighting fixtures in the form of "A" type focus has limits in terms of full illumination (in particular, a place that requires backlighting) not local lighting. As described above, the problem of conventional LED lighting devices is that their use is limited despite their high emission efficiency.
Furthermore, in order to solve the problem, for example, a structure in which a package of LEDs is mounted on the surface of a polygonal support has the problem that the structure is complicated, the productivity of the assembly is low, and the Manufacturing cost is much higher.
Divulgation Technical problem In order to solve the aforementioned problems, an object of the present invention is to provide an LED lighting apparatus in the form of focus that does not have a great influence on the production cost and that also increases the use of a lighting apparatus increasing An angle of orientation of the light in such a way that the LED lighting apparatus with focus form. have a curved line of backlight in the shape of a bat's wing near the existing "A" incandescent lamp.
Another object of the present invention is to provide an apparatus for heat dissipation which can implement a compact type integration structure in which a lower part having a LED package mounted thereon protrudes towards a globe or sphere to ensure that a space interior has elements electrical circuits in it and backlight to carry out the dissipation of heat with efficiency, and a lighting device LED shaped focus that incorporates it.
Another object of the present invention is to provide a focus-based LED lighting apparatus with high-level dust and waterproof properties by means of a double seal for circuit elements. electric housed in the part of the interior space of an apparatus for heat dissipation, and the package of LEDs.
Additionally, another object of the present invention is to provide an apparatus for heat dissipation suitable for an LED lighting apparatus in the form of "A" type focus, which has the ability to dissipate the heat generated by the LED package.
Technical solution To achieve the above objectives, the present invention provides a focus-based LED lighting apparatus, which includes a package of LEDs equipped with a PCB metal having a plurality of LEDs mounted thereon, a heat dissipation apparatus configured to dissipate the heat generated by the package of LEDs mounted on one side of the heat dissipation apparatus, a screw cap coupled to the other side of the apparatus for heat dissipation through an insulation member and configured to supply a source of energy to the LED pack, and a globe or sphere attached to one side of the heat dissipation device to cover the LED pack. Here, the heat dissipating apparatus includes a main body configured to include a cylindrical portion shaped to have a portion of cylindrical space, with an open top, formed in the center of the cylindrical part so that electronic elements can be accommodated in the cylindrical part, an annular flange portion protrudes in a vertical direction from the bottom of the cylindrical portion, and a protruding portion configured to have a diameter that gradually becomes smaller from the annular flange portion to the lower portion in the cylindrical portion. that the LED pack is installed in order to extend an orientation angle of the light irradiated by the LED pack; and a plurality of heat dissipation fins, configured to have a vertical inner portion and a lower portion, respectively, coupled to the cylindrical portion and the flange portion of the main body, protrude radially in up and down directions, and configured to dissipate the heat transferred through the main body from the LED pack.
In this case, it is preferable that the focus-shaped LED lighting apparatus further includes a sealing material incorporated in the heat dissipation apparatus, the insulation part and the screw cap, thus providing properties against dust and water.
The sealing material would consist of epoxy, silicon or cement.
Furthermore, it is preferable that the heat dissipation apparatus have portions, coupled to the insulating part and the globe or sphere, subjected to a molding treatment with a sealing material.
Moreover, it is preferred that the plurality of fins for heat dissipation be widened from the top to the bottom.
The apparatus for heat dissipation can be integrally formed by die-casting with aluminum (Al).
Further, it is preferred that the insulating piece includes a cylindrical portion compressed and coupled to the inner circumferential portion of the threaded cap and an annular flange portion extended at right angles from the lower portion of the cylindrical portion, and then coupled to the fins for heat dissipation of the apparatus for heat dissipation, and configured to have a cylindrical projection, with an external diameter slightly smaller than the outer diameter of a cylindrical portion. of the apparatus for heat dissipation, in the inner circumferential part thereof.
It is preferred that a curved surface is formed between the lower surface and the inclined plane of the projecting part, the metal PCB will be rounded and bent based on the curved surface of the projecting part so that the LED pack is partially mounted in the part of the lower surface and the inclined plane, and backlight in the rear part is carried out by the plurality of LEDs mounted in the inclined plane.
It is preferred that the metal PCB be equipped with circular grooves and the LEDs have a package structure without a wall.
The balloon can be subjected to a sanding process.
According to another aspect of the invention, the invention provides an LED lighting apparatus in the form of focus, which includes a package of LEDs equipped with a metal PCB having a plurality of LEDs mounted thereon, an apparatus for dissipating heat configured to have the LED package mounted on the bottom thereof, to include a plurality of heat dissipation fins arranged radially along the outer circumference thereof, and to dissipate the heat generated by the LED package, a screw cap coupled to the other part of the apparatus for heat dissipation through an insulation piece and configured for the supply of a power supply for the LED package, and a balloon attached to one side of the apparatus for heat dissipation to cover the package of LEDs. The apparatus for heat dissipation is configured to have the lower part, which has the package of LEDs mounted thereon, configured in the form of a truncated cone projecting towards the balloon.
According to another aspect of the invention, the invention provides an apparatus for heat dissipation of an LED lighting apparatus in the form of an LED spotlight, which includes a main body configured to include a cylindrical portion shaped to have a portion of cylindrical space, with a open upper part, formed in the center of the cylindrical portion so that electronic elements can be accommodated in the cylindrical part, an annular ridge portion projecting in the vertical direction from the bottom of the cylindrical portion, and a protruding shaped portion so that its diameter becomes gradually smaller from the annular flange portion to the lower part in which the LED pack is mounted in order to extend an orientation angle of the light irradiated by the LED pack; and a plurality of heat dissipating fins configured to have a vertical inner portion and a lower portion, respectively, coupled to a cylindrical portion and the flange portion of the main body, which protrude radially upwards and downwards, and adapted to dissipate the heat transferred through the main body of the LED pack.
The main body can extend the orientation angle of the light irradiated by the LED pack because the lower part that has the LED pack mounted therein gradually narrows in the direction of the LED pack. As a result, a vertical background light curve in the form of a "bat wing", capable of radiating light at an angle of up to about 280 °, can be obtained, as in the current "A" type incandescent lamp.
According to still another aspect of the present invention, the present invention provides an apparatus for heat dissipation of a LED lighting apparatus in the form of focus, which includes a main body configured to include a cylindrical portion configured to have a portion of space Cylindrical, which has an open top, formed in the center of the cylindrical part of. so that the electronic elements can be accommodated in the cylindrical part and a lower portion configured to have an annular ridge portion projecting in a cylindrical direction from the bottom of the cylindrical portion, provided in the outer circumferential portion thereof, for cover the lower part of the cylindrical portion, and to have the LED package mounted on the lower part thereof; and a plurality of heat dissipation fins configured to have a vertical inner portion and a lower portion, respectively, coupled to a cylindrical portion and a flange portion of the main body, projecting radially in upward and downward directions, and configured to dissipate the heat transferred by the main body of the LED pack.
Advantageous effects As described above, in the present invention, a structure of the compact integration type is provided in which a lower part, having a pack of LEDs mounted thereon, protrudes towards a balloon so that a heat dissipating device can dissipate heat efficiently, an internal space to have the electrical circuit elements secured inside it, and that the backlight can materialize. Accordingly, the advantage is that the LED lighting apparatus in the form of focus can be formed compactly.
Additionally, in the present invention, since the LED bundle protrudes into the balloon, the production cost is not greatly affected, and a curved line of backlight in the form of a bat wing similar to that of the existing one may be obtained. Incandescent lamp type "A". Consequently, since the light can be radiated to the back of the LED lighting apparatus in the form of focus, it can be used for various purposes, such as in a location that requires total illumination, not local illumination.
. Further, in the present invention, high level water / dust resistance properties can be achieved by means of a double seal for the elements of the electric circuit, housed in the interior space portion of the heat dissipating apparatus, and the package of LEDs.
BRIEF DESCRIPTION OF THE DRAWINGS Other objects and advantages of the invention will be more fully understood from the detailed description that follows, taken in conjunction with the accompanying drawings, in which: Figures 1 and 2 are diagrams showing curved lines of vertical backlighting of illumination; Figure 3 is a perspective view of coupling showing a LED lighting apparatus in the form of focus according to a first embodiment of the invention; Figure 4 is a perspective view showing the LED lighting apparatus in the form of focus according to the first embodiment of the invention; Figure 5 is a cross-sectional view of the apparatus taken along the line IV-IV shown in Figure 3; Fig. 6 is a cross-sectional view showing a LED illumination apparatus in the shape of a focus in the length direction according to a second embodiment of the invention; Figure 7 is a cross-sectional view of a LED illumination apparatus in the form of focus in the direction of the length according to a third embodiment of the invention.
DETAILED DESCRIPTION OF THE INVENTION The constructions of the LED lighting apparatus in the form of focus according to the embodiments of the present invention are described below with reference to the accompanying drawings.
Figures 3 and 4 are an exploded perspective view and an exploded perspective view, respectively, showing an LED lighting apparatus in the form of a focus according to a first embodiment of the invention. Figure 5 is a cross-sectional view of the apparatus taken along the line IV-IV shown in Figure 3.
With reference to Figures 3 to 5, the LED lighting apparatus 1 in the form of focus, according to the first embodiment of the invention, includes a pack 10 of LEDs, an apparatus 30 for heat dissipation, an insulation piece 40 , a balloon or sphere 50, and a cap with thread 70 (ie, the base). The LED pack 10 is equipped with a metal PCB 1 1 of a plate of substantially circular shape and a plurality of LEDs 13 mounted on an external surface of the metal PCB 1 1. It is preferred that the metal PCB 11 be formed of a plate material having excellent thermal conductivity, such as aluminum (Al), copper (Cu), iron or an alloy thereof. In addition, the metal PCB 11 is separated from an inner circumferential surface of the balloon 50 at a predetermined interval in order to prevent heat at an elevated temperature from being directly transferred to the balloon 50. On the other hand, a plurality of holes 15 Interns are formed in the metal PCB 1 1 and configured to have respective pieces (not shown) for fixing the apparatus 30 for dissipating heat passing through it.
The LED lighting apparatus in focus form, according to the first mode, can be implemented to form a lamp with a power consumption of 2.2 W that can replace a 20 to 25 W incandescent lamp using, for example, 16 LEDs 13 each of 0.14 W. Each of the LEDs 13 has a pack structure without a wall and has "bat wing" characteristics with a beam angle of 160 °. A package is adopted in which each of the LEDs 13 has a wide beam angle, and the LED pack 10 is implemented to project in a protruding manner. Accordingly, the LED illumination apparatus 1 of the present invention has a curved line of vertical backlight that allows backlight at the back, as described below.
The heat dissipating device 30 is used to dissipate the heat generated by the LED pack 10, to the exterior of the LED lighting apparatus 1. The heat dissipating device 30 includes a plurality of fins 33 for heat dissipation and a main body 31 equipped with a protruding part 35.
The main body 31 includes a cylindrical space portion 31a configured with an open lid, a cylindrical portion 31 b configured to have the cylindrical space portion 31 a formed in the center thereof, and an annular rim portion 31 c vertically highlighted from the cylindrical portion 31 b. A PCB 23 is arranged in the space portion 31 a and is configured with predetermined electronic elements 21 for power supply to the metal PCB 1 1 mounted thereon.
On the other hand, the plurality of fins 33 for heat dissipation are integrally formed with the main body 31. The fins 33 for heat dissipation protrude in a constant thickness in up and down directions and are arranged radially at equal angles as length of the outer circumference of the main body 31. The protruding portion 35 is highlighted in conical shape truncated below the annular flange portion 31 c of the main body 31 and is formed, integrally with the portion 31 c of annular flange. The protruding portion 35 has a flat circular surface so that the LED pack 10 can be secured to the protruding portion 35. On the other hand, an annular insertion groove 31 d is formed near the circumferential outer portion on the underside of the portion 31 c of annular flange and configured to have the upper part of the balloon 50 inserted therein.
The plurality of fins 33 for heat dissipation gradually widens from the top to the bottom. The vertical inner portion of the heat dissipating fins 33 engages with the outer circumference of the cylindrical portion 31b of the main body 31. The lower portion of the heat dissipation fins engages the upper portion of the flange portion. 31 c of the main body 31 and is configured to transfer the heat coming from the LED pack 10 towards the main body 31, towards the plurality of fins 33 for heat dissipation.
Fixing holes 33a are formed in the upper portion of some of the plurality of fins 33 for heat dissipation and configured with parts 81 for securing the insulating part 40 secured thereto.
The plurality of fins 33 for heat dissipation are arranged in the vertical direction. Accordingly, when the heat generated by the LED pack 10 is transferred to the protruding portion 35 of the heat dissipating apparatus 30 which comes into contact with the metal PCB 11, the heat transferred to the protruding portion 35 is transferred to above and the cylindrical portion 31 b and a is also transferred to the annular rim portion 31 c integrally formed with the projecting portion 35. Subsequently, the heat transferred to the cylindrical portion 31 b and a annular rim portion 31 c is transferred to the plurality fins 33 for heat dissipation exposed to air. Accordingly, the heat is exchanged as the surrounding air passes uniformly through the plurality of fins 33 for heat dissipation. In this case, the plurality of fins 33 for heat dissipation does not prevent a natural convection current of the hot air rising because they are arranged vertically, so that cooling of the air occurs.
The protruding portion 35, as shown in Figure 5, is highlighted in a conical shape truncated from the lower portion of the annular rim portion 31 c and is configured with a flat circular surface to which the LED pack 10 is secured. . A conduit 35a for cable is formed approximately in the center of the projecting portion 35 and configured to communicate with the space portion 31 a. Electrical wires 25a and 25b (positive and negative) pass through conduit 35a for cable and thus electrically connect LED package 10 with PCB 23. On the other hand, fixing holes 35b are formed in the projecting portion. 35 and configured to include a plurality of pieces to secure the metal PCB 1 1 secured thereto.
Additionally, the protruding portion 35 is highlighted in a truncated conical shape having an inclined plane 35c such that the outer circumference of the protruding portion 35 is reduced as a function of the diameter of the metal PCB 1 1 towards the LED pack 10.
As described above, in the LED lighting apparatus, according to the first embodiment of the present invention, each of the LEDs 13 has a pack structure without a wall and the LED pack 10 has a "bat wing" characteristic. wherein the beam angle is 160 °. In addition, the LED pack 10 is disposed in the lower part of the truncated cone projecting from the balloon 50. Accordingly, the LED lighting apparatus has a relatively advantageous backlight structure in the back, as compared to a light structure. pack of LEDs of the conventional flat type.
That is, the LED lighting apparatus according to the first embodiment of the present invention adopts the protruding type structure in which the light irradiated by the LEDs 13 arranged in the outer block of the metal PCB 1 1, from among the plurality of LEDs 13, and the light totally reflected by the balloon 50 radiates towards the rear. Accordingly, the LED lighting apparatus has a curved line of vertical backlight capable of greatly expanding at an angle of orientation of the light emitted by the LED lighting apparatus.
Therefore, in the LED lighting apparatus, according to the first embodiment of the invention, the curved line of vertical background light has the shape of a "bat wing" as shown in FIG. 2. Therefore, the apparatus LED lighting can overcome a limited use, such as local lighting in a conventional LED lighting fixture in the form of focus, and can be widely used, since it can be used in a place that requires full illumination. The inclined plane 35c functions as a reflection sheet to reflect the light scattered internally.
The main body 31, the plurality of fins 33 for heat dissipation and the protruding porch 35 can be entirely made by aluminum casting (Al).
The insulation part 40 includes a cylindrical portion 40a and an annular flange portion 40b. The cylindrical portion 40a is compressed and coupled to an inner circumferential portion of the threaded cap 70 and is configured to isolate the heat dissipating apparatus 30 from the threaded cap 70 and also functions as a means for connecting together the apparatus 30 for heat dissipation and the threaded cap 70. The annular flange portion 40b extends at right angles from the bottom of the cylindrical portion 40a and engages the fins 33 for heat dissipation of the apparatus 30 for heat dissipation.
A plurality of holes 43 are formed in the annular flange portion 40b for reciprocal connection, and are configured with respective pieces 81 passing therethrough. The parts 81 are screwed into respective holding holes 33a formed in the fins 33 for heat dissipation. In addition, a concave groove 45 is formed in a bottom portion of the annular flange portion 40b, coming into contact with an upper face (i.e., the cylindrical portion 31b) of the main body 31 of the apparatus 30 for heat dissipation. The concave groove 45 is filled with epoxy for impermeability and then subjected to a molding process.
Additionally, a cylindrical projection 40c may be formed in an inner circumferential portion in the lower portion of the annular flange portion 40b. The cylindrical projection 40c has an outer diameter slightly smaller than that of the cylindrical portion 31b of the apparatus 30 for heat dissipation. The cylindrical projection 40c functions as a mounting guide when the insulating part 40 is mounted in the heat dissipating apparatus 30 and also, together with the cylindrical portion 31b, forms a labyrinth structure, so that the cylindrical projection 40c work to prevent dust or moisture from entering the PCB 23 in which the electronic elements 21, arranged in the space portion 31 to the inside of the main body 31, are mounted.
Lines 27a and 27b for power supply for electrically connecting the PCB 23 and the screw cap 70 pass through a through hole 41 in the cylindrical portion 40a of the insulating part 40.
The balloon 50 is of clear glass or frosted glass and configured to have an approximately spherical shape having an open side. It was found that the LED lighting apparatus 1 of the present embodiment had a luminance of about 30 lux, when the balloon 50 was made of clear glass and about 25 lux, when the balloon 50 was made of frosted glass, and the apparatus LED lighting had a maximum luminous flux of about 200 Im cold white.
The balloon 50 has the open part coupled to the projecting portion 35 of the main body 31 so that the LED pack 10 is subjected to a cover method. In this case, the molding process for impermeability using epoxy is performed in the insertion slot 31 d of the flange portion 31 c which is inserted in the upper part of the balloon 50.
The cap with thread (or base) 70 can be manufactured using one of the types E26, E27, E14 which are made of metallic material, like nickel (Ni). The cap with thread (or base) 70 is coupled to the upper part of the apparatus 30 for heat dissipation through the insulating part 40 and is configured to have a thread, to be threadedly coupled with a common plug, formed therein . On the other hand, electrical contacts 70a and 70b, positive and negative, are formed in the screw cap 70 and are connected with respective electric power supply lines 27a and 27b extracted from the PCB 23.
Meanwhile, in the LED lighting apparatus of the present invention, in order to provide water and dust tightness characteristics to the package 10 of LEDs and the PCB 23 incorporated in the interior space portion 31 a of the heat dissipation apparatus 30, the internal spaces of the heat dissipation apparatus 30, the insulation part 40, and the threaded cap 70 are filled with a sealing material for water and dust tightness, such as epoxy, silicone, or cement.
Further, as described above, the double sealing of the PCB 23 incorporated in the space portion 31 into the heat dissipating apparatus 30 is carried out by means of a filled epoxy molding in the concave slot 45, formed in the lower part of the annular rim portion 40b, and the labyrinth structure between the cylindrical portion 31 b of the heat dissipation apparatus 30 and the cylindrical protrusion 40c of the insulating part 40.
On the other hand, for the water-tightness (impermeability) and the powder of the LED pack 10, the hemispherical balloon 50 is coupled to the insertion groove 31 d of the flange portion 31 c and also the molded epoxy to the groove 31. d insertion of the flange portion 31 c.
Accordingly, the LED lighting apparatus of the present invention meets international water / dust tightness standards (ie IP66 classification).
Figure 6 is a cross-sectional view showing a LED illumination apparatus in the shape of a focus in the length direction according to a second embodiment of the invention.
With reference to Figure 6, the LED lighting apparatus 1 in the form of focus, according to the second embodiment of the invention, includes a package 10a of LEDs, an apparatus 30a for heat dissipation, an insulation piece 40, a balloon 50, and a cap with thread 70 (that is, a base).
In comparison with the first embodiment, the LED lighting apparatus 1 a in the form of focus, according to the second embodiment, has a structure in which the LED package 10a and the heat dissipation apparatus 30a are modified to be More effective backlight on the back. In Accordingly, a description of the insulating part 40, the balloon 50, and the threaded cap 70 (ie, the base), which have the same structure as those of the first embodiment, are omitted, and the package 10a of LEDs and apparatus 30a for heat dissipation having modified structures: First, in the heat dissipating apparatus 30a, according to the second embodiment, a protruding portion 350 is configured to have the LED package 10a mounted therein and has a truncated conical shape having a curved surface structure between the bottom surface 350a and the inclined plane 350c.
In addition, the LED pack 10a has a structure configured to have a wider area than that of the first embodiment and to have the outer portion curved along the curved surface between the bottom portion 350a and the inclined plane 350c. The LED pack 10a, as in the first embodiment, includes a metal PCB 1 1 a of a circular plate shape and a plurality of LEDs 13 mounted on the outer surface of the metal PCB 1 1 a, but the size of the PCB The metal part and the number of mounted LEDs 13 can be increased so that the partial assembly can be performed not only on the lower surface 350a of the projecting portion 350, but also on the inclined plane 350c thereof. The partial assembly of the LED pack 10a for the inclined plane 350c can be implemented without increasing the size of the metal PCB 1 1 a and the number of LEDs of 13 by reducing the area of the lower surface 350a of the projecting portion 350.
In the second embodiment, circular notches may be previously formed along the curved surface of the metal PCB 1 1 a, so that skirting the bend corresponding to the curved surface between the bottom surface 350a and the inclined plane 350c may be implemented easily, when the LED pack 10a is manufactured to have the plurality of LEDs 13 mounted on the outer PCB 1 1 a metal surface of a laminar shape and then mounted on the lower surface 350 a and the inclined plane 350 c of the protruding portion 350 Furthermore, it is preferable that each one of the LEDs 13 adopt a type of wallless package so that it has a wide beam angle, as in the first embodiment.
On the other hand, in the present invention, sanding processing can be performed on the inner face of the balloon 50, if necessary, whereby the amount of background light radiated from the LED pack 10a can be increased. In this case, the light can be reflected from the front of the balloon and radiates towards the back.
In this case, as described above, the LED pack 10a is partially mounted not only on the truncated conical bottom surface 350a protruding into the balloon 50, but also on the inclined plane 350c. Accordingly, the LED lighting apparatus 1a, according to the second embodiment, has a protruding type structure in which the light irradiated from the LEDs 13 arranged in the outer block of the metal PCB 1 1, from among the plurality of LEDs 13, and the light reflected completely from the balloon 50 can be radiated backward. Accordingly, the LED lighting apparatus 1 a of the second embodiment has the vertical curved backlight line capable of greatly expanding at an orientation angle of the light radiating from the LED lighting apparatus.
Accordingly, in the LED lighting apparatus 1a, according to the second embodiment of the invention, compared to the first embodiment, the vertical curved light line had the shape of a "bat wing" as shown in FIG. Figure 2 without increasing the production cost, and the orientation angle was 280 °. Accordingly, the present invention can overcome limited use, such as local illumination in a conventional LED lighting apparatus in the form of focus, and can be widely used, since it can be used even in a location that requires full illumination.
In addition, as in a third embodiment shown in FIG. 7, a LED lighting apparatus 1b in the form of focus of the present invention, the lower part of the main body 31 may not be protruding downwards, but the LED package 10 can be mounted on a background that obstructs the bottom of a cylindrical portion 31 b, unlike the first and second embodiments in which the heat dissipation apparatus 30 protrudes so as to form a backlight at the rear.
The remaining parts of the third modality have the same construction and operation as those of the first modality, and their description is omitted.
Industrial Application The focus-shaped LED lighting apparatus of the present invention is applied to the "A" type LED light fixtures that replace the incandescent lamps.

Claims (14)

  1. CLAIMS 1. An LED lighting apparatus in the form of a focus, comprising: an LEDS package equipped with a metal PCB having a plurality of LEDs mounted thereon; an apparatus for heat dissipation configured to dissipate the heat generated by the package of LEDs mounted on one side of the apparatus for heat dissipation; a screw cap coupled to the other side of the apparatus for heat dissipation through an insulation piece and configured to provide a power source for the LED package; Y a balloon coupled to a part of the heat dissipating apparatus for wrapping the LED pack; wherein the apparatus for heat dissipation comprises: a main body configured to comprise a cylindrical portion configured to have a cylindrical space portion, with an open top portion, formed in the center of the cylindrical portion so that electronic elements can be accommodated in the cylindrical portion, a flange portion annular protruding in a vertical direction from a lower portion of the cylindrical portion, and a protruding portion configured to have a diameter that gradually becomes smaller from the annular flange portion to a lower section on which the LED package is mounted with in order to extend an orientation angle of the light irradiated by the LED pack; Y a plurality of heat dissipation fins configured to have a vertical inner portion and a lower portion, respectively, coupled to a cylindrical portion and to the flange portion of the main body, projecting radially in upward and downward directions, and configured to dissipate the heat transferred through the main body from the LED pack. 2. The focus-shaped LED lighting apparatus according to claim 1, comprising a sealing matenal incorporated in the heat dissipation apparatus, the insulation part, and the threaded cap, to thereby provide waterproof and anti-dust characteristics . 3. The focus-shaped LED lighting apparatus according to claim 1, wherein each of the plurality of heat dissipating fins gradually expand from an upper side to a lower part. 4. The LED lighting apparatus in the form of a focus according to claim 1, wherein the insulating piece is composed of: a cylindrical portion compressed and coupled to an internal circumferential portion of the screw cap; Y an annular flange portion extended at a right angle from a lower portion of the cylindrical portion and, thereafter, coupled to the fins for heat dissipation of the heat dissipating apparatus and configured with a cylindrical projection having a slightly outer diameter smaller than an outer diameter of a cylindrical portion of the heat dissipation apparatus, in an inner circumferential portion thereof. 5. The LED lighting apparatus in the form of a focus according to claim 1, wherein: a curved surface is provided between a bottom or bottom surface and an inclined plane of the projecting portion; the metal PCB is rounded and flexed based on the curved surface of the protruding portion so that the LED pack is partially mounted on part of the lower surface and the inclined plane; Y Backlight on a back part is obtained by the plurality of LEDs mounted on the inclined plane. 6. The LED lighting apparatus in the shape of a focus according to the Claim 5, wherein the metal PCB is equipped with circular notches. 7. The LED lighting apparatus in the form of a focus according to claim 1, wherein the balloon is subjected to a sanding process. 8. An LED lighting apparatus in the form of a focus, comprising: a package of LEDs equipped with a metal PCB having a plurality of LEDs mounted thereon; an apparatus for heat dissipation configured to have the LED package mounted on the bottom thereof, which comprises a plurality of fins for heat dissipation arranged radially along an outer circumference thereof, and to dissipate the heat generated for the package of LEDs; a screw cap coupled to the other part of the apparatus for heat dissipation through an insulation piece and configured to provide a power supply for the LED package, and a balloon coupled to one side of the heat dissipation apparatus to cover the LED pack; wherein the heat dissipating apparatus is configured with a bottom or lower section having the LED package mounted thereon, said lower section having a truncated conical shape protruding from the balloon. 9. The LED lighting apparatus in the form of a focus according to claim 8, wherein the apparatus for heat dissipation comprises: a main body configured to comprise a cylindrical portion configured to have a cylindrical space portion, with an open top portion, formed in a center of the cylindrical portion so that the electronic elements can be accommodated in the cylindrical portion and a lower portion configured to have an annular flange portion projecting in a cylindrical direction from a lower portion of the cylindrical portion, provided in an outer circumferential portion thereof, for covering the lower portion of the cylindrical portion, and for having the LED package mounted on the bottom of it; Y a plurality of heat dissipating fins configured to have a vertical inner portion and a lower portion, respectively, coupled to a cylindrical portion and, the flange portion of the main body, which protrude radially in upward and downward directions, and configured to dissipate the heat transferred through the main body from the package LEDs 10. The LED lighting apparatus in the form of a focus according to claim 8, wherein the apparatus for heat dissipation comprises: a main body configured to include a cylindrical portion configured to have a portion of cylindrical space, with an open top portion, formed in a center of the cylindrical portion so that the electronic elements can be accommodated in the cylindrical portion; annular rim protruding in a vertical direction from a lower portion of the cylindrical portion, and a protruding portion configured with a diameter that gradually becomes smaller from the annular rim portion to a bottom or bottom in which the rim bundle is mounted. LEDs in order to extend an orientation angle of the light irradiated by the LED package, and a plurality of heat dissipation fins configured to have a vertical inner portion and a lower portion, respectively, coupled to a cylindrical portion and the flange portion of the main body, which protrude radially in upward directions and down, and are configured to dissipate the heat transferred through the main body from the LED pack. eleven . The LED lighting apparatus in the form of a focus according to claim 10, wherein: A curved surface is formed between a lower surface and an inclined plane of the portion. The metal PCB is rounded and bent on the base of the curved surface of the protruding portion so that the LED pack is partly mounted on part of the lower surface and the inclined plane, and on which backlight on a back is realized by the plurality of LEDs mounted on the inclined plane. 12. The LED lighting apparatus in the form of a focus according to claim 8, wherein the balloon is subjected to a sanding process. 13: An apparatus for heat dissipation of a LED lighting apparatus in the form of focus to dissipate the heat generated by a LED package equipped with a metal PCB having a plurality of LEDs mounted thereon, said apparatus for dissipation of heat comprises: a main body configured to comprise a cylindrical portion configured to have a cylindrical space portion, with an open top portion, formed in a center of the cylindrical portion so that electronic elements can be accommodated in the cylindrical portion, a flange portion annular protruding in a vertical direction from a lower portion of the cylindrical portion, and a protruding portion configured to have a diameter that gradually becomes smaller from the annular flange portion to a lower section or bottom in which the package is mounted of LEDs in order to extend an orientation angle of the light irradiated by the LED pack, and a plurality of heat dissipation fins configured to have a vertical inner portion and a lower portion, respectively, coupled to a cylindrical portion and a flange portion of the main body, which protrude radially in up and down directions, and are configured to dissipate the heat transferred through the main body from the LED pack. 14. An apparatus for heat dissipation of a LED lighting apparatus in the form of focus to dissipate the heat generated by a package of LEDs equipped with a metal PCB having a plurality of LEDs mounted thereon, said apparatus for heat dissipation comprising: a main body configured with a cylindrical portion configured to have a portion of cylindrical space, with an open top portion, formed in a center of the cylindrical portion so that electronic elements can be accommodated in the cylindrical portion and a lower portion configured for having an annular flange portion, protruding in a cylindrical direction from a lower portion of the cylindrical portion, provided in a circumferential outer portion thereof, for covering the lower portion of the cylindrical portion, and for having the LED package assembled in a bottom or bottom part of it; Y a plurality of heat dissipation fins configured to have a vertical inner portion and a lower portion, respectively, coupled to a cylindrical portion and the flange portion of the main body, which protrude radially in up and down directions, and which They are configured to dissipate the heat transferred through the main body from the LED pack.
MX2011005992A 2008-12-05 2009-11-10 Radially-shaped heat dissipating apparatus, and bulb-shaped led lighting apparatus using same. MX2011005992A (en)

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KR1020080123401A KR101032415B1 (en) 2008-12-05 2008-12-05 Radial type radiator and LED lighting apparatus of bulb type using the same
PCT/KR2009/006564 WO2010064793A2 (en) 2008-12-05 2009-11-10 Radially-shaped heat dissipating apparatus, and bulb-shaped led lighting apparatus using same

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KR101032415B1 (en) 2011-05-03
RU2011127425A (en) 2013-01-10

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